;;; Compiled by f2cl version:
;;; ("$Id: f2cl1.l,v 1.209 2008/09/11 14:59:55 rtoy Exp $"
;;;  "$Id: f2cl2.l,v 1.37 2008/02/22 22:19:33 rtoy Rel $"
;;;  "$Id: f2cl3.l,v 1.6 2008/02/22 22:19:33 rtoy Rel $"
;;;  "$Id: f2cl4.l,v 1.7 2008/02/22 22:19:34 rtoy Rel $"
;;;  "$Id: f2cl5.l,v 1.197 2008/09/11 15:03:25 rtoy Exp $"
;;;  "$Id: f2cl6.l,v 1.48 2008/08/24 00:56:27 rtoy Exp $"
;;;  "$Id: macros.l,v 1.106 2008/09/15 15:27:36 rtoy Exp $")

;;; Using Lisp International Allegro CL Enterprise Edition 8.1 [64-bit Linux (x86-64)] (Oct 7, 2008 17:13)
;;;
;;; Options: ((:prune-labels nil) (:auto-save t)
;;;           (:relaxed-array-decls t) (:coerce-assigns :as-needed)
;;;           (:array-type ':array) (:array-slicing t)
;;;           (:declare-common nil) (:float-format double-float))

(in-package :clml.lapack)


(let* ((nbmax 64) (ldt (+ nbmax 1)) (zero 0.0) (one 1.0))
  (declare (type (f2cl-lib:integer4 64 64) nbmax)
   (type (f2cl-lib:integer4) ldt) (type (double-float 0.0 0.0) zero)
   (type (double-float 1.0 1.0) one) (ignorable nbmax ldt zero one))
  (defun dgehrd (n ilo ihi a lda tau work lwork info)
    (declare (type (array double-float (*)) work tau a)
     (type (f2cl-lib:integer4) info lwork lda ihi ilo n))
    (f2cl-lib:with-multi-array-data ((a double-float a-%data%
                                      a-%offset%)
                                     (tau double-float tau-%data%
                                      tau-%offset%)
                                     (work double-float work-%data%
                                      work-%offset%))
      (prog ((ei 0.0) (i 0) (ib 0) (iinfo 0) (iws 0) (ldwork 0)
             (lwkopt 0) (nb 0) (nbmin 0) (nh 0) (nx 0) (lquery nil)
             (t$
              (make-array (the fixnum (reduce #'* (list ldt nbmax)))
                :element-type 'double-float)))
            (declare (type (double-float) ei)
             (type (array double-float (*)) t$)
             (type f2cl-lib:logical lquery)
             (type (f2cl-lib:integer4) i ib iinfo iws ldwork lwkopt nb
              nbmin nh nx))
            (setf info 0)
            (setf nb
                  (min (the f2cl-lib:integer4 nbmax)
                       (the f2cl-lib:integer4
                            (ilaenv 1 "DGEHRD" " " n ilo ihi -1))))
            (setf lwkopt (f2cl-lib:int-mul n nb))
            (setf (f2cl-lib:fref work-%data% (1) ((1 *)) work-%offset%)
                  (coerce (the f2cl-lib:integer4 lwkopt)
                          'double-float))
            (setf lquery (coerce (= lwork -1) 'f2cl-lib:logical))
            (cond ((< n 0) (setf info -1))
                  ((or (< ilo 1)
                       (> ilo
                          (max (the f2cl-lib:integer4 1)
                               (the f2cl-lib:integer4 n))))
                   (setf info -2))
                  ((or (< ihi
                          (min (the f2cl-lib:integer4 ilo)
                               (the f2cl-lib:integer4 n)))
                       (> ihi n))
                   (setf info -3))
                  ((< lda
                      (max (the f2cl-lib:integer4 1)
                           (the f2cl-lib:integer4 n)))
                   (setf info -5))
                  ((and (< lwork
                           (max (the f2cl-lib:integer4 1)
                                (the f2cl-lib:integer4 n)))
                        (not lquery))
                   (setf info -8)))
            (cond ((/= info 0)
                   (xerbla "DGEHRD" (f2cl-lib:int-sub info))
                   (go end_label))
                  (lquery (go end_label)))
            (f2cl-lib:fdo (i 1 (f2cl-lib:int-add i 1))
                          ((> i
                              (f2cl-lib:int-add ilo
                                                (f2cl-lib:int-sub 1)))
                           nil)
                          (tagbody
                              (setf (f2cl-lib:fref tau-%data% (i)
                                                   ((1 *))
                                                   tau-%offset%)
                                    zero)
                            label10))
            (f2cl-lib:fdo (i
                           (max (the f2cl-lib:integer4 1)
                                (the f2cl-lib:integer4 ihi))
                           (f2cl-lib:int-add i 1))
                          ((> i
                              (f2cl-lib:int-add n
                                                (f2cl-lib:int-sub 1)))
                           nil)
                          (tagbody
                              (setf (f2cl-lib:fref tau-%data% (i)
                                                   ((1 *))
                                                   tau-%offset%)
                                    zero)
                            label20))
            (setf nh (f2cl-lib:int-add (f2cl-lib:int-sub ihi ilo) 1))
            (cond ((<= nh 1)
                   (setf (f2cl-lib:fref work-%data% (1) ((1 *))
                                        work-%offset%)
                         (coerce (the f2cl-lib:integer4 1)
                                 'double-float))
                   (go end_label)))
            (setf nb
                  (min (the f2cl-lib:integer4 nbmax)
                       (the f2cl-lib:integer4
                            (ilaenv 1 "DGEHRD" " " n ilo ihi -1))))
            (setf nbmin 2)
            (setf iws 1)
            (cond ((and (> nb 1) (< nb nh))
                   (setf nx
                         (max (the f2cl-lib:integer4 nb)
                              (the f2cl-lib:integer4
                                   (ilaenv 3 "DGEHRD" " " n ilo ihi
                                    -1))))
                   (cond ((< nx nh)
                          (setf iws (f2cl-lib:int-mul n nb))
                          (cond ((< lwork iws)
                                 (setf nbmin
                                       (max (the f2cl-lib:integer4 2)
                                            (the f2cl-lib:integer4
                                                 (ilaenv 2 "DGEHRD" " "
                                                  n ilo ihi -1))))
                                 (cond ((>= lwork
                                            (f2cl-lib:int-mul n nbmin))
                                        (setf nb
                                              (the f2cl-lib:integer4
                                                   (truncate lwork
                                                             n))))
                                       (t (setf nb 1)))))))))
            (setf ldwork n)
            (cond ((or (< nb nbmin) (>= nb nh)) (setf i ilo))
                  (t
                   (f2cl-lib:fdo (i ilo (f2cl-lib:int-add i nb))
                                 ((> i
                                     (f2cl-lib:int-add ihi
                                                       (f2cl-lib:int-sub 1)
                                                       (f2cl-lib:int-sub nx)))
                                  nil)
                                 (tagbody
                                     (setf ib
                                           (min (the f2cl-lib:integer4
                                                     nb)
                                                (the f2cl-lib:integer4
                                                     (f2cl-lib:int-sub ihi
                                                                       i))))
                                     (dlahrd ihi i ib
                                      (f2cl-lib:array-slice a
                                                            double-float
                                                            (1 i)
                                                            ((1 lda)
                                                             (1 *)))
                                      lda
                                      (f2cl-lib:array-slice tau
                                                            double-float
                                                            (i)
                                                            ((1 *)))
                                      t$ ldt work ldwork)
                                     (setf ei
                                           (f2cl-lib:fref a-%data%
                                                          ((f2cl-lib:int-add i
                                                                             ib)
                                                           (f2cl-lib:int-sub (f2cl-lib:int-add i
                                                                                               ib)
                                                                             1))
                                                          ((1 lda)
                                                           (1 *))
                                                          a-%offset%))
                                     (setf (f2cl-lib:fref a-%data%
                                                          ((f2cl-lib:int-add i
                                                                             ib)
                                                           (f2cl-lib:int-sub (f2cl-lib:int-add i
                                                                                               ib)
                                                                             1))
                                                          ((1 lda)
                                                           (1 *))
                                                          a-%offset%)
                                           one)
                                     (dgemm "No transpose" "Transpose"
                                      ihi
                                      (f2cl-lib:int-add (f2cl-lib:int-sub ihi
                                                                          i
                                                                          ib)
                                                        1)
                                      ib (- one) work ldwork
                                      (f2cl-lib:array-slice a
                                                            double-float
                                                            ((+ i ib)
                                                             i)
                                                            ((1 lda)
                                                             (1 *)))
                                      lda one
                                      (f2cl-lib:array-slice a
                                                            double-float
                                                            (1
                                                             (f2cl-lib:int-add i
                                                                               ib))
                                                            ((1 lda)
                                                             (1 *)))
                                      lda)
                                     (setf (f2cl-lib:fref a-%data%
                                                          ((f2cl-lib:int-add i
                                                                             ib)
                                                           (f2cl-lib:int-sub (f2cl-lib:int-add i
                                                                                               ib)
                                                                             1))
                                                          ((1 lda)
                                                           (1 *))
                                                          a-%offset%)
                                           ei)
                                     (dlarfb "Left" "Transpose"
                                      "Forward" "Columnwise"
                                      (f2cl-lib:int-sub ihi i)
                                      (f2cl-lib:int-add (f2cl-lib:int-sub n
                                                                          i
                                                                          ib)
                                                        1)
                                      ib
                                      (f2cl-lib:array-slice a
                                                            double-float
                                                            ((+ i 1) i)
                                                            ((1 lda)
                                                             (1 *)))
                                      lda t$ ldt
                                      (f2cl-lib:array-slice a
                                                            double-float
                                                            ((+ i 1)
                                                             (f2cl-lib:int-add i
                                                                               ib))
                                                            ((1 lda)
                                                             (1 *)))
                                      lda work ldwork)
                                   label30))))
            (multiple-value-bind (var-0 var-1 var-2 var-3 var-4 var-5
                                  var-6 var-7)
                (dgehd2 n i ihi a lda tau work iinfo)
              (declare
               (ignore var-0 var-1 var-2 var-3 var-4 var-5 var-6))
              (setf iinfo var-7))
            (setf (f2cl-lib:fref work-%data% (1) ((1 *)) work-%offset%)
                  (coerce (the f2cl-lib:integer4 iws) 'double-float))
            (go end_label)
       end_label (return (values nil nil nil nil nil nil nil nil
                                 info))))))

(in-package #-gcl #:cl-user #+gcl "CL-USER")
#+#.(cl:if (cl:find-package '#:f2cl) '(and) '(or))
(eval-when (:load-toplevel :compile-toplevel :execute)
  (setf (gethash 'fortran-to-lisp::dgehrd
                 fortran-to-lisp::*f2cl-function-info*)
        (fortran-to-lisp::make-f2cl-finfo :arg-types '((fortran-to-lisp::integer4)
                                                       (fortran-to-lisp::integer4)
                                                       (fortran-to-lisp::integer4)
                                                       (array
                                                        double-float
                                                        (*))
                                                       (fortran-to-lisp::integer4)
                                                       (array
                                                        double-float
                                                        (*))
                                                       (array
                                                        double-float
                                                        (*))
                                                       (fortran-to-lisp::integer4)
                                                       (fortran-to-lisp::integer4))
          :return-values '(nil nil nil nil nil nil nil nil
                           fortran-to-lisp::info)
          :calls '(fortran-to-lisp::dgehd2 fortran-to-lisp::dlarfb
                   fortran-to-lisp::dgemm fortran-to-lisp::dlahrd
                   fortran-to-lisp::xerbla fortran-to-lisp::ilaenv))))

